Home / 420,780.11-580,673.48-229,793.45

Finding the Fourth Proportional to 420,780.11, 580,673.48 and 229,793.45

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Solution

The fourth proportional to 420,780.11, 580,673.48 and 229,793.45 is: 317,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,780.11 : 580,673.48 = 229,793.45 : x
  2. Step 2: Convert to fraction form
    420,780.11/580,673.48 = 229,793.45/x
  3. Step 3: Cross multiply
    420,780.11x = 580,673.48 × 229,793.45
  4. Step 4: Simplify right side
    420,780.11x = 133,434,958,240.37
  5. Step 5: Solve for x
    x = 133,434,958,240.37/420,780.11
  6. Step 6: Final answer
    x = 317,113.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.